D M Campbell. Show Affiliations »
Abstract
Mesh: See more » Communicable Diseases/epidemiologyEpidemiologic MethodsHumansPublic Health
Year: 1992 PMID: 1586803 PMCID: PMC1881721 DOI: 10.1136/bmj.304.6833.1056
Source DB: PubMed Journal: BMJ ISSN: 0959-8138